Added get_domain function

roles/docker-taiga/tasks/main.yml

@@ -7,7 +7,7 @@
   include_role:
     name: nginx-domain-setup
   vars:
-    domain:   "{{ domains[application_id] }}"
+    domain:   "{{ domains | get_domain(application_id) }}"
     http_port:   "{{ ports.localhost.http[application_id] }}"
 
 - name: "include role docker-repository-setup for {{application_id}}"

roles/docker-taiga/templates/env.j2

@@ -1,6 +1,6 @@
 # Taiga's URLs - Variables to define where Taiga should be served
 TAIGA_SITES_SCHEME  =   https          # serve Taiga using "http" or "https" (secured) connection
-TAIGA_SITES_DOMAIN  =   "{{domains[application_id]}}"   # Taiga's base URL
+TAIGA_SITES_DOMAIN  =   "{{domains | get_domain(application_id)}}"   # Taiga's base URL
   
 TAIGA_SUBPATH       =   ""  # it'll be appended to the TAIGA_DOMAIN (use either "" or a "/subpath")
 WEBSOCKETS_SCHEME   =   wss # events connection protocol (use either "ws" or "wss")